CN201285542Y - Touch screens with transparent conductive material resistors - Google Patents
Touch screens with transparent conductive material resistors Download PDFInfo
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- CN201285542Y CN201285542Y CNU2008201335125U CN200820133512U CN201285542Y CN 201285542 Y CN201285542 Y CN 201285542Y CN U2008201335125 U CNU2008201335125 U CN U2008201335125U CN 200820133512 U CN200820133512 U CN 200820133512U CN 201285542 Y CN201285542 Y CN 201285542Y
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- conductive material
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Abstract
The utility model relates to a touch screen with a transparent conductive material resistor, and provides a touch screen system integrating the transparent conductive material resistor and a method. A metal path line on the surface of the touch screen can bear the radio frequency interference (RFI) which can unfavorably influence the performance of the touch screen. The transparent conductive material resistor inserted in the metal path line can be used for forming a low pass filter which can reduce the influence of the RFI.
Description
Technical field
The utility model relates to touch-screen system and the method with integrated transparent conductive material resistor.This transparent conductive material resistor can be made by tin indium oxide (ITO), conductive cleaning condensate and antimony tin (ATO) or other suitable material.
Background technology
Be used for the numerous species type being arranged at the input equipment of computer system executable operations.Described operation is generally corresponding to moving hand on display screen and/or select.As an example, described input equipment can comprise button or key, mouse, trackball, touch pads, operating rod, touch-screen and analog.Especially touch-screen is because its simple to operate and diverse in function and the price that reduces gradually and more and more welcome.Touch-screen allows the user by selecting and moving cursor with finger or the simple touch display screen of pen.In general, touch and touch location on the described touch-screen identification display screen, computer system is understood described touch, carries out an action based on described touch event then.
Touch-screen generally comprises touch panel, controller and software driver.Described touch panel is one to have the clean face plate of touch sensitive surface.Described touch panel is positioned at the front of display screen, thereby described touch-sensitive surface covers is on the viewing area of display screen.Described touch panel registration touch event (finger or the touch of other object on touch sensitive surface) also sends these signals to controller.Controller is handled described signal and is sent data to computer system.Software driver converts touch event to the computing machine incident.
Touch panel can comprise the touch sensor array of energy senses touch incident.Some touch panels can detect a plurality of touches (finger or other objects are almost simultaneously touching touch sensitive surface on the diverse location) and close on touch (finger or other objects are within the near-field detection ability of their touch sensor), and discern and follow the trail of its position.Those touch panels that can detect a plurality of touches can be described as the multi-touch panel.
The mutual capacitance touch panel can be made of the row and column of trace on dielectric relative both sides.Locate " point of crossing " of trace (be trace up with below the position of process (but directly not electrically contacting mutually) each other), in fact described trace forms two electrodes, is mutual capacitance between these two electrodes.For the scanning sensor panel, can apply excitation to delegation, and all other row keep the dc voltage level.When row was energized, modulated output signal just can be capacitively coupled to the row of sensor panel.Described row can be connected to analog channel (being also referred to as event detection and demodulator circuit here).When described panel was touched or almost be touched, electric charge is in a small amount taken out guided to contact point.For each row that is energized, since the touch or suspension (hover) incident that take place at the sensor place that is positioned on the point of crossing of row that is energized and the row that are connected, and make each analog channel that is connected to row produce the output valve of the variable quantity of representing modulated output signal.Each row has obtained after the analog channel output valve at sensor panel, encourages new row (all other row keep the dc voltage level once more simultaneously), and obtains additional analog channel output valve.When all row have been energized and when having obtained the analog channel output valve, sensor panel is considered to by " scanning ", and can obtain complete " image " that touch or suspend by the whole sensor panel.The image that touches or suspend can comprise the analog channel output valve of each pixel (row and column) in the panel, and each output valve is represented the amount of detected touch of specific location or suspension.
The metal trace that etches in the touch panel can be used to electric charge is transferred to event detection and the demodulator circuit that is connected to described panel from panel surface.Along with the increase of touch-screen size, the length that etches into the metal trace in the touch panel also can increase.These longer metal trace can be served as antenna and be made Radio frequency interference (RFI) (RFI) signal be brought into touch panel circuit and controller.RFI is any undesirable RF signal that disturbs electronics and electrical system integrality.These RFI signals can influence the operation of touch-screen unfriendly.
Therefore, need be used for reducing the system and method for influence of the RFI signal of touch-screen.
The utility model content
A purpose of the present utility model is to reduce the influence of the RFI signal in the touch-screen.
For this reason,, provide a kind of touch panel, it is characterized in that, having comprised: one group of transparent conductive material trace on the first surface of described touch panel with integrated transparent conductive material resistor according to an aspect of the present utility model; Be connected to a plurality of metal trace of described transparent conductive material groups of traces; And a plurality of transparent conductive material resistors that are connected to metal trace.
According to another aspect of the present utility model, a kind of computer system with touch panel is provided, and this touch panel has integrated transparent conductive material resistor, it is characterized in that, comprise: processor is configured to execute instruction and operation that enforcement is associated with computer system; Display device is coupled to described processor in operation; Touch panel is coupled to described processor in operation, described touch panel is the panel of substantial transparent that is positioned at the place ahead of display screen, and described touch panel comprises: one group of transparent conductive material trace on the first surface of described touch panel; Be connected to a plurality of metal trace of described transparent conductive material groups of traces; And a plurality of transparent conductive material resistors that are connected to metal trace.
The system and method for the touch-screen with transparent conductive material resistor is provided.
The transparent conductive material resistor can be inserted in the metal trace of etching in touch panel, and this metal trace is used for electric charge is transferred to the capacitive detection circuit that is connected to described panel from panel surface.For example, described metal trace can be disconnected and the transparent conductive material resistor can be formed in these gaps.The resistance of these transparent conductive material resistors in conjunction with the inherent capacitance of circuit that is connected to touch panel and connector together, can form the low-pass filter that can stop the RFI signal.
Flower seldom or not increases cost and just can realize in this way the transparent conductive material resistor being inserted between the metal trace because described transparent conductive material can be surperficial patterned at touch panel, be used to form the electrode row and column of touch sensor with generation.These electrode row and columns generally form in the following way: transparent conductive material layer is deposited on the top of substrate surface, and the some parts that etches away transparent conductive material layer subsequently is to form trace.Thereby described transparent conductive material resistor can be used as the part of the processing that generates transparent conductive material electrode row and column and forms.The some parts that keeps transparent conductive material to be serving as the transparent conductive material resistor, rather than etches away all extra sections of transparent conductive material layer.
Have the touch panel of integrated transparent conductive material resistor and an influence that computer system thereof has advantageously reduced the RFI signal in the touch-screen according to of the present utility model.
Description of drawings
Above-mentioned and further feature of the present utility model, its characteristic and various advantage in conjunction with the drawings will be more obvious with the following detailed description, and wherein similar label is represented similar part in whole instructions, and wherein:
Fig. 1 shows the example touch screen computing system that can operate with the capacitance touch panel according to the utility model embodiment.
Fig. 2 shows the exploded perspective view according to the exemplary touch-screen computing system of the utility model embodiment.
Fig. 3 shows the detailed section view according to the exemplary touch-screen of the utility model embodiment.
Fig. 4 shows the exemplary capacitance touch panel according to the integrated transparent conductive material resistor of having of the utility model embodiment.
Fig. 5 shows the exemplary touch panel according to the integrated transparent conductive material resistor of having of the utility model embodiment, and wherein flexible (flex) circuit is bonded in the same edge on the direct relative both sides of panel.
Fig. 6 shows the exemplary touch panel according to the integrated transparent conductive material resistor of having of the utility model embodiment, and wherein flexible circuit is bonded in the same edge of the same side of panel.
Fig. 7 shows and is connected to single exemplary tin indium oxide (ITO) electrodes series of capacitance sensing circuit according to the utility model embodiment via metal trace, ITO resistor and flexible circuit.
Fig. 8 shows the schematic illustration according to the element of Fig. 7 of the utility model embodiment.
Fig. 9 and 10 shows two exemplary configurations of the metal trace that has integrated transparent conductive material resistor according to the utility model embodiment flexible circuit is connected to.
Figure 11 shows the process flow diagram of exemplary processing that manufacturing according to the utility model embodiment has the touch panel of integrated transparent conductive material resistor.
Embodiment
The full content that common names that transfer the possession of, that submit on May 6th, 2004 such as Steve Hotelling are called the U.S. Patent application the 10/840th, No. 862 (attorney's file number P3266US1) of " MULTIPOINT TOUCHSCREEN " is incorporated into this by reference.
The full content that common names that transfer the possession of, that propose on January 3rd, 2007 such as Steve Hotelling are called the Application No. 11/650,036 (attorney's file number P4880US1) of " DOUBLE-SIDED TOUCH-SENSITIVE PANEL WITH SHIIELD ANDDRIVE COMBINED LAYER " is incorporated into this by reference.
The full content that common names that transfer the possession of, that propose on June 13rd, 2007 such as Steve Hotelling are called the Application No. 11/818,394 (attorney's file number P5000US1) of " PET-BASED TOUCHPAD " is incorporated into this by reference.
Fig. 1 show according to the utility model embodiment can be with the example touch screen computing system 100 of capacitance touch panel 124 operation.Touch panel 124 can or use flexible circuit to be connected to other parts in the computing system 100 by the connector that forms on the sensor panel.Computing system 100 can comprise one and a plurality of panel processor 102 and peripheral hardware 104, and Panel subsystem 106.Described one or more processor 102 for example comprises that ARM968 processor or other have the processor of similar functions and ability.But in other embodiments, described panel processor function also can be implemented by the special logic such as state machine.Peripheral hardware 104 can include, but are not limited to random-access memory (ram) or other type memory or reservoir, watchdog timer (watchdog) and similar devices.
Panel subsystem 106 can include, but are not limited to one or more simulation path 10s 8, channel scan logic 110 and driver logic 114.Channel scan logic 110 can be visited RAM 112, provides control from the analog channel reading of data and for analog channel automatically.Described control comprises the row of multi-touch panel 124 multiplexing to analog channel 108.In addition, channel scan logic 110 can be controlled described driver logic and selectively impose on the pumping signal of the row of multi-touch panel 124.In certain embodiments, Panel subsystem 106, panel processor 102 and peripheral hardware 104 can be integrated into single asic (ASIC).
As mentioned above, multi-touch panel 124 can comprise the capacitance sensing medium in certain embodiments, and it has by the separated a plurality of row traces of dielectric (or drive wire) and a plurality of row trace (or sense wire).In certain embodiments, this dielectric substance can be transparent, as polyethylene terephthalate (PET), and glass or other material such as mylar (Mylar).Described row and column trace can be formed by transparent conductive material, as tin indium oxide (ITO), conductive cleaning condensate (conductive clear polymer) or antimony tin (ATO), although also can use other non-transparent material such as copper.In certain embodiments, the row and column trace can be vertical mutually, but other on-right angle orientation also is possible in other embodiments.For example, in polar coordinate system, described sense wire can be a concentric circles and drive wire can be radial extension line (vice versa).Thereby, be understandable that " OK; and " row "; " first dimension " and " second dimension "; or " first " and " second " be intended to not only contain orthogonal grid, also contains the intersection trace (for example concentric line and the radial line of polar coordinates layout) with first and second other geometries of tieing up at this term that may use.
Locate " intersection " of trace (be trace up with below the position of process (but directly not electrically contacting mutually) each other), in fact trace forms two electrodes (although the trace more than two also can intersect).Each intersection of row and column trace can be represented the capacitance sensing node and can be regarded as picture element (pixel) 126, and it becomes when multi-touch panel 124 is counted as catching touch " image " and is particularly useful.(in other words, after plank system 106 has determined whether each touch sensor place in multi-touch panel 124 detects touch event face to face, the generation in the multi-touch panel pattern of touch inductor of touch event " image " (for example pattern of the finger of touch panel) that can be regarded as touching).When two electrodes were in different electromotive force, each pixel can have intrinsic self-capacitance or the mutual capacitance that forms between the row and column electrode of pixel.If the AC signal is imposed on one of them electrode, for example, then can between electrode, form electric field and AC or signal electric capacity by utilizing the AC voltage drive column electrode of characteristic frequency, be called Csig.Finger or other object multi-touch panel 124 near or on existence can be detected by the measurement variation of Csig.The row of multi-touch panel 124 can drive the one or more analog channels 108 in the Panel subsystem 106.In certain embodiments, each row all is coupled to a specialized simulation path 10 8.But in other embodiments, described row can be coupled to the analog channel 108 of smaller amounts via analog switch.
Fig. 2 shows the exploded perspective view of exemplary touch-screen computing system 200.Touch-screen system 200 comprises LCD (LCD) 230 and is positioned at the transparent touch-sensitive panel 220 of LCD 230 fronts.LCD 230 can be configured to show the graphic user interface (GUI) that may comprise pointer or cursor and out of Memory to the user.On the other hand, touch-screen 220 is the input equipments to user's touch-sensitive, allows the graphic user interface interaction on user and the LCD 230.As an example, touch-screen 220 can allow the user by clicking GUI on the LCD 230 simply and move the input pointer on graphic user interface or selecting.
Fig. 3 shows the detailed section view of exemplary touch-screen 300.Touch-screen 300 comprises the capacitance touch panel 330 that is clipped between protective cover 310 and the LCD 340.LCD 340 can be corresponding to any LCD display commonly used well known in the art.Although not shown, described LCD 340 typically comprises various layers, comprises fluorescent panel, polarization filtering sheet, liquid crystal cell layer, color filter or the like.
Touch-screen 300 also can wrap a plurality of bonding coats 320.Bonding coat 320 is bonded together capacitance touch panel and LCD 340 and cover 310, provides rigidity and hardness with the cambium layer stack structure and for described stepped construction.In fact, bonding coat 320 helps to form than the more solid monolithic integrated circuit plate of each single layer.In some cases, bonding agent comprises the index-matched material, to improve the visual appearance of touch-screen 300.In certain embodiments, can save one or two bonding coat 320 and do not influence the performance of touch-screen.
Fig. 4 shows the exemplary capacitance touch panel 400 with integrated transparent conductive material resistor.Touch panel 400 comprises a plurality of capacitance sensing nodes 440.The capacitance sensing node can extensively change.For example, the capacitance sensing node can be based on self-capacitance or mutual capacitance.In self-capacitance, " certainly " electric capacity of single electrode for example is with respect to geodesic.In mutual capacitance, measure the described mutual capacitance between at least the first electrode and second electrode.In arbitrary situation, each node 440 can be independent of other node 440 work, thereby produces the generation signal of representing difference on the touch panel 400 simultaneously.
Go out as shown, the apart that touch panel 400 comprises two-grid is double line not.Touch panel 400 comprises transparent conductive material row trace 410 that is positioned at top surface and the transparent conductive material row traces 420 that is positioned at basal surface in the illustrated embodiment.As a rule, each lip-deep line is parallel to each other.In addition, though in Different Plane, the line on the different surfaces is configured to intersect or intersects, thereby produces capacitance sensing node 440, and it represents the different coordinates on the plane of touch panel 400 respectively.Node 440 is configured to receive the electric capacity input near the object of touch touch panel 400 node 440.When object during near node 440, electric charge " is stolen " in this object meeting, thereby influences the electric capacity at node 440 places.
As mentioned above, row traces 420 is encouraged respectively by the AC signal, and row trace 410 is connected to the capacitance sensing circuit (not shown) of all row traces 410 of sensing constantly.Described capacitance sensing circuit typically comprises one or more sensor ICs, and this sensor IC is measured the electric capacity of each row trace 410 and reported its measurement result to master controller.Described sensor IC for example can become numerical data with the artificial capacitor conversion of signals, transmits described numerical data to master controller via universal serial bus then.Can use any amount of sensor IC.For example, sensor IC can be used to all row traces 410, and perhaps a plurality of sensor ICs can be used for single or one group of row trace 410.As a rule, sensor IC report tracking signal, it is the function of the electric capacity intensity at the position of node 440 and node 440 places.
Row trace 410 and row traces 420 can place on the surface of dielectric components 401 by any suitable composition technology, and described composition technology for example comprises deposit, etching, printing and similar fashion.Because row traces 420 can be encouraged or kept the dc voltage level by the AC signal, thereby and row trace 410 need be connected to analog channel can detect modulated output signal, with its demodulation and convert output valve to, therefore must form electrical connection by row traces 420 and row trace 410.
Flexible circuit can directly be electrically connected to row traces 420 and row trace 410.But along with the increase of touch panel 400 sizes, the size that need couple directly to the flexible circuit of row traces 420 and row trace 410 also will increase.For size that reduces flexible circuit and more changeableization that allows the placement of flexible circuit, metal trace 415 and 425 can be used to be connected row traces 420 and row trace 410 to flexible circuit.
Metal trace 415 and 425 can be of value to this layout, because they allow to use compact flexible circuit 430 and 460. Flexible circuit 430 and 460 only takies the fraction at touch panel edge.The size of these flexible circuits is significantly less than the size of needed flexible circuit under the situation that couples directly to row traces 420 and row trace 410.For example, flexible circuit being coupled directly to row traces and row trace may require flexible circuit to stride across the almost whole edge of touch panel.Fig. 5 and 6 illustrates two kinds of other exemplary arrangement, and it can be made by using metal trace, so that rows of electrodes and electrodes series are coupled to their flexible circuits separately.
Fig. 5 illustrates exemplary touch panel 500, and wherein flexible circuit is bonded on the same edge of direct relative both sides of dielectric 501.This layout can form by arranging metal trace 525 along the edge of dielectric 501.Connect described flexible circuit with this layout and can minimize the overall dimension that touch panel 500 is used for the required area of connectivity and reduces touch panel 500.In addition, can make the single flexible circuit, with row 520 and the row 510 on the direct relative both sides at the same edge that is connected to substrate.Connect described flexible circuit with this layout and can minimize the overall dimension that touch panel 500 is used for the required area of connectivity and reduces touch panel 500.
Fig. 6 shows exemplary touch panel 600, and wherein flexible circuit is bonded on the same edge of dielectric 601 phase the same sides.This layout can be made in the following way: arrange metal trace around dielectric 601, so that row 620 is connected to the top surface of dielectric 601, and arrange metal trace 625 along the edge of the top surface of dielectric 601 then.Connect described flexible circuit with this layout and can minimize the overall dimension that touch panel 600 is used for the required area of connectivity and reduces touch panel 600.In addition, can make the single flexible circuit, to be connected to row 620 and row 610.
By using metal trace can form many other layouts of the flexible circuit on the touch panel in this way.In certain embodiments, rows of electrodes and electrodes series can be coupled to their flexible circuits separately by using metal trace.In some other embodiment, only there is one group of electrode to use metal trace to be coupled to their flexible circuit.For example, row 520 can use metal trace to be coupled to flexible circuit in the embodiment of Fig. 5, and row 510 can be coupled directly to their flexible circuit simultaneously.
Though use metal trace that many advantages are arranged, select the road along metal trace 415 and 425 pairs of signals and can have a shortcoming.Metal trace 415 and 425 can be served as antenna and be made Radio frequency interference (RFI) (RFI) signal be coupled to sensing circuit.These RFI signals can influence the operation of touch-screen and the precision that touch-screen 400 can detect user's input unfriendly.Along with the increase of the size of touch-screen 400, metal trace 415 and 425 length also can increase, thereby have strengthened the influence of RFI signal.
According to the utility model, thereby described metal trace can be interrupted and resistor 416 and 426 can be inserted into the influence that signal path reduces the RFI signal.Resistor 416 is made with 420 identical transparent conductive material with 426 preferred uses in order to form trace 410.For example, resistor 416 and 426 can be formed by ITO.
Fig. 7 shows single exemplary ITO row trace 710, and it is connected to capacitance sensing circuit 750 via metal trace 726, ITO resistor 726 and flexible circuit 730.Described ITO can have the layer resistivity of about 200 ohms per square units, makes the resistance of described resistor 746 near 400 ohm.Be understandable that any other suitable transparent conductive material all can be used to make row trace 710 and resistor 726.
Fig. 8 shows the schematic illustration of element among Fig. 7.Sense wire 820 can be modeled as the electric capacity of continuous distribution.The resistivity of metal trace 825 and flexible circuit 830 can be ignored.At last, ITO resistor 826 forms low-pass filter together in conjunction with capacitor 840.Capacitor 840 is represented the input capacitance of capacitance sensing circuit 850 and is used to be coupled the electric capacity of metal trace 825 to the flexible circuit of capacitance sensing circuit 850.The electric capacity of capacitor 840 can be about 40pf in this embodiment.According to suitable resistance value, preferably, this low-pass filter can stop before the RFI signal is detected by capacitance sensing circuit or the remarkable at least described RFI signal that is picked up by metal trace that weakens.For example, the low-pass filter with resistance value of 40pf capacitance and 400 ohm has the calculating cutoff frequency of 10MHz.In other words, can stop that by the ITO resistor being inserted into the resistance that forms in the metal trace of touch panel and the combination of electric capacity most of frequency is higher than the signal of 1GHz.This cutoff frequency is suitable for stopping that most of RFI enters capacitance sensing circuit.The size of described ITO resistor 826 is adjustable to obtain suitable resistance, to guarantee suitable cutoff frequency value.
Flower seldom or not increases cost just can be realized in this way the transparent conductive material resistor being inserted metal trace, because described transparent conductive material can be patterned on the surface of touch panel, to form transparent conductive material electrode row and column.These electrode row and columns generally form in the following way: deposit transparent conductive material layer on substrate surface, and etch away the some parts of transparent conductive material layer subsequently, to form line.Thereby according to the utility model, described transparent conductive material resistor can be used as the part of the processing of making the electrode row and column and forms.Then, the some parts that keeps transparent conductive material is as the transparent conductive material resistor, rather than etches away all extra sections of transparent conductive material layer.In some other embodiment, can be on substrate surface deposit multi-layer transparent conductive material, thereby allow the transparent conductive material resistor by rows of electrodes with itemize and solely form.In certain embodiments, being used to form the transparent conductive material of resistor can be different with the transparent conductive material resistor that is used to form the electrode row and column.
In addition, on the surface of touch panel, leave over extra transparent conductive material other benefit is arranged.Be understandable that the zone with transparent conductive material often has lower transparency than the zone that does not have transparent conductive material.This generally is more undesirable for the user, because the user can be from the spatial discrimination outlet between the line, that is, the transparent conductive material of institute's composition can become very obvious, thereby produces the touch-screen with undesirable optical property.For fear of the problems referred to above, dead angle (space that is not capped) can be subdivided into unconnected electricity and float (that is, can utilize the pad that separates on the space that composition is carried out in the dead band) such as transparent conductive material pads, rather than etches away all transparent conductive materials simply.Described pad is typically separated with minimum track width.In addition, described pad is very little by what do, to reduce their influences to capacitance measurement.This technology is attempted by producing the outward appearance that uniform optics retarding agent (retarder) minimizes transparent conductive material.Just, by attempting to produce uniform transparent conductive material sheet, can believe be described panel will be on function more approaching uniform optics retarding agent, so the heterogeneity of visual appearance will be minimized.Yet, in certain embodiments,, can so that being provided, RFI stop to transparent conductive material resistor piece is carried out composition on the surface of touch panel except the transparent conductive material pad of floating, increase the homogeneity of the visual appearance of touch panel simultaneously.
Fig. 9 and 10 shows two exemplary configurations that flexible circuit are connected to the metal trace with integrated transparent conductive material resistor.In Fig. 9, metal trace 910 is etched in the authoritative surface of touch panel 900.Near the edge of touch panel 900, metal trace 910 is interrupted and transparent conductive material resistor 920 is inserted into.Metal trace part 910a continues and is connected to the copper tracing wire of flexible circuit 930 after transparent conductive material resistor 920.When the RFI that does not benefit from transparent conductive material resistor 920 as metal trace part 910a stopped, these parts can fully be lacked to minimize the influence of RFI.
Figure 10 shows another structure that flexible circuit is connected to the metal trace with integrated transparent conductive material resistor.Metal trace 1010 is etched in the top surface of touch panel 1000 and near the edge of touch panel 1000, metal trace 1010 is interrupted and transparent conductive material resistor 1020 is inserted into.Transparent conductive material resistor 1020 is formed the edge of fully close touch panel 1000, thereby flexible circuit 1030 directly is bonded to transparent conductive material resistor 1020.Therefore, according to this structure, transparent conductive material resistor 1020 can stop RFI for whole metal trace 1010.
Figure 11 shows the process flow diagram of processing 1100 that according to the utility model manufacturing has the touch panel of integrated transparent conductive material resistor.In step 1100, on the surface of touch panel, form the transparent conductive material trace.In step 1120, metal trace is formed the transparent conductive material trace is connected to flexible circuit connector.In step 1130, metal trace is interrupted and is formed in the gap of metal trace at step 1140 transparent conductive material resistor.Though main with the situation that forms the transparent conductive material resistor the utility model is described, will be understood that these steps also can use any amount of appropriate technology to finish with reference to interrupting metal trace.For example, need not interrupt metal trace, metal trace can be formed and have the gap, the size in this gap is suitable for holding the transparent conductive material resistor.In addition, in certain embodiments, transparent conductive material layer can be made before metal traces.In these embodiments, in fact described metal trace part can be formed on around the described transparent conductive material resistor.
This shows, the system and the method that is used to make this system that have the touch-screen of integrated transparent conductive material resistor according to of the present utility model are provided.The people who is familiar with this area this utility model as can be known also can realize that by other embodiment except that described embodiment unrestricted purpose provides described embodiment for illustration, and the utility model is only limited by claims.
Claims (20)
1, a kind of touch panel with integrated transparent conductive material resistor is characterized in that, comprising:
One group of transparent conductive material trace on the first surface of described touch panel;
Be connected to a plurality of metal trace of described transparent conductive material groups of traces; And
Be connected to a plurality of transparent conductive material resistors of metal trace.
2, touch panel according to claim 1 is characterized in that, described transparent conductive material resistor is connected between metal trace and the capacitance sensing circuit.
3, touch panel according to claim 1 is characterized in that, described transparent conductive material resistor has about 400 ohm resistance.
4, touch panel according to claim 1 is characterized in that, described transparent conductive material resistor is the resistor that forms the low-pass filter of the cutoff frequency with about 10MHz.
5, touch panel according to claim 4 is characterized in that, described low-pass filter is the wave filter that barrier frequency is higher than the signal of about 1GHz.
6, touch panel according to claim 1 is characterized in that, further comprises the flexible circuit that is directly connected to described transparent conductive material resistor.
7, touch panel according to claim 1 is characterized in that, further comprise with described transparent conductive material resistor be connected to described metal trace an end near.
8, touch panel according to claim 1 is characterized in that, resistor is formed by described transparent conductive material groups of traces.
9, touch panel according to claim 1 is characterized in that, described transparent conductive material comprises at least one in tin indium oxide (ITO), conductive cleaning condensate and the antimony tin (ATO).
10, a kind of computer system with touch panel, this touch panel has integrated transparent conductive material resistor, it is characterized in that, comprising:
Processor is configured to execute instruction and operation that enforcement is associated with computer system;
Display device is coupled to described processor in operation;
Touch panel is coupled to described processor in operation, described touch panel is the panel of substantial transparent that is positioned at the place ahead of display screen, and described touch panel comprises:
One group of transparent conductive material trace on the first surface of described touch panel;
Be connected to a plurality of metal trace of described transparent conductive material groups of traces; And
Be connected to a plurality of transparent conductive material resistors of metal trace.
11, computer system according to claim 10 is characterized in that, described transparent conductive material resistor is connected between metal trace and the capacitance sensing circuit.
12, computer system according to claim 10 is characterized in that, described transparent conductive material resistor is the resistor that stops Radio frequency interference (RFI) (RFI) signal from metal trace.
13, computer system according to claim 10 is characterized in that, described transparent conductive material resistor has about 400 ohm resistance.
14, computer system according to claim 10 is characterized in that, described transparent conductive material resistor is to form the resistor that cutoff frequency is about the low-pass filter of 10MHz.
15, computer system according to claim 14 is characterized in that, described low-pass filter is the wave filter of barrier frequency greater than the signal of about 1GHz.
16, computer system according to claim 10 is characterized in that, described transparent conductive material resistor increases the sensitivity of capacitance sensing circuit.
17, computer system according to claim 10 is characterized in that, further comprises the flexible circuit that is directly connected to described transparent conductive material resistor.
18, computer system according to claim 10 is characterized in that, further comprise with described transparent conductive material resistor be connected to described metal trace an end near.
19, computer system according to claim 10 is characterized in that, the transparent conductive material resistor is formed by described transparent conductive material groups of traces.
20, computer system according to claim 10 is characterized in that, described transparent conductive material comprises at least one in tin indium oxide (ITO), conductive cleaning condensate and the antimony tin (ATO).
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| US11/818,311 | 2007-06-13 | ||
| US11/818,311 US8400408B2 (en) | 2007-06-13 | 2007-06-13 | Touch screens with transparent conductive material resistors |
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| CN201285542Y true CN201285542Y (en) | 2009-08-05 |
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| US (2) | US8400408B2 (en) |
| JP (1) | JP5269505B2 (en) |
| CN (1) | CN201285542Y (en) |
| AU (1) | AU2008100555B4 (en) |
| DE (1) | DE202008007776U1 (en) |
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| NL (1) | NL2001667C2 (en) |
| TW (1) | TWI372991B (en) |
| WO (1) | WO2008157253A1 (en) |
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- 2008-05-15 GB GB0808782.7A patent/GB2453403B/en not_active Expired - Fee Related
- 2008-05-21 TW TW097118777A patent/TWI372991B/en active
- 2008-06-11 NL NL2001667A patent/NL2001667C2/en not_active IP Right Cessation
- 2008-06-11 DE DE202008007776U patent/DE202008007776U1/en not_active Expired - Lifetime
- 2008-06-12 US US12/746,256 patent/US20100272786A1/en not_active Abandoned
- 2008-06-13 JP JP2008180711A patent/JP5269505B2/en not_active Expired - Fee Related
- 2008-06-13 WO PCT/US2008/066762 patent/WO2008157253A1/en active Application Filing
- 2008-06-13 AU AU2008100555A patent/AU2008100555B4/en not_active Expired
- 2008-06-13 CN CNU2008201335125U patent/CN201285542Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135845A (en) * | 2010-01-26 | 2011-07-27 | 索尼公司 | Sensor element and display apparatus |
| CN103777809A (en) * | 2012-10-19 | 2014-05-07 | 乐金显示有限公司 | Touch screen panel |
| CN103777809B (en) * | 2012-10-19 | 2017-07-04 | 乐金显示有限公司 | Touch panel |
| JP2014170586A (en) * | 2014-05-22 | 2014-09-18 | Nec Corp | Touch panel, touch panel device, user interface device, and electronic apparatus |
| CN112486361A (en) * | 2020-12-20 | 2021-03-12 | 英特睿达(山东)电子科技有限公司 | Display touch screen member |
| CN112486361B (en) * | 2020-12-20 | 2023-01-24 | 英特睿达(山东)电子科技有限公司 | Display touch screen member |
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|---|---|
| GB0808782D0 (en) | 2008-06-18 |
| US20080309623A1 (en) | 2008-12-18 |
| JP5269505B2 (en) | 2013-08-21 |
| US20100272786A1 (en) | 2010-10-28 |
| DE202008007776U1 (en) | 2008-10-23 |
| GB2490765B (en) | 2013-01-09 |
| WO2008157253A1 (en) | 2008-12-24 |
| AU2008100555A4 (en) | 2008-08-07 |
| JP2008310818A (en) | 2008-12-25 |
| GB201206528D0 (en) | 2012-05-30 |
| TWI372991B (en) | 2012-09-21 |
| GB2453403B (en) | 2012-10-17 |
| TW200905535A (en) | 2009-02-01 |
| US8400408B2 (en) | 2013-03-19 |
| GB2490765A (en) | 2012-11-14 |
| NL2001667C2 (en) | 2009-09-22 |
| AU2008100555B4 (en) | 2010-04-01 |
| GB2453403A (en) | 2009-04-08 |
| NL2001667A1 (en) | 2008-12-16 |
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